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2023-07-28
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package itn.com.cmm.util;
import java.awt.Image;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.FileUtils;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
/**
*
* @author : 이호영
* @fileName : PdfUtil.java
* @date : 2023.03.16
* @description : PDF를 다루는 Utils
* ===========================================================
* DATE AUTHOR NOTE
* ----------------------------------------------------------- *
* 2023.04.06 이호영 최초 생성
*
*
*
*/
public final class PdfUtil {
/**
* 휴대폰번호 대시('-') 추가
* 대시 유무 상관없음
* 유효성 맞지 않을시 변환안됨.
* @param response
*/
public static void showPdf(HttpServletResponse response, String pdfFileName) {
FileInputStream fis = null;
BufferedOutputStream bos = null;
try {
File pdfFile = new File(pdfFileName);
// 클라이언트 브라우져에서 바로 보는 방법(헤더 변경)
response.setContentType("application/pdf");
// ★ 이 구문이 있으면 [다운로드], 이 구문이 없다면 바로 target 지정된 곳에 view 해줍니다.
// response.addHeader("Content-Disposition", "attachment; filename=" + pdfFile.getName() + ".pdf");
// 파일 읽고 쓰는 건 일반적인 Write방식이랑 동일합니다. 다만 reponse 출력 스트림 객체에 write.
fis = new FileInputStream(pdfFile);
int size = fis.available(); // 지정 파일에서 읽을 수 있는 바이트 수를 반환
byte[] buf = new byte[size]; // 버퍼설정
int readCount = fis.read(buf);
response.flushBuffer();
bos = new BufferedOutputStream(response.getOutputStream());
bos.write(buf, 0, readCount);
bos.flush();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (fis != null)
fis.close(); // close는 꼭! 반드시!
if (bos != null)
bos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static String makeImgPdf(String imgDir,String extsn) throws Exception {
PDDocument doc = new PDDocument();
String uuid = UUID.randomUUID().toString();
try {
File copy1 = new File(imgDir);
File copy2 = new File(imgDir + "." +extsn);
FileUtils.copyFile(copy1, copy2);
File imgFiles = new File(imgDir + "." +extsn);
Image img = ImageIO.read(imgFiles);
PDPage page = new PDPage(PDRectangle.A4);
doc.addPage(page);
PDImageXObject pdImage = PDImageXObject.createFromFile(imgFiles.toString(), doc);
int pageWidth = Math.round(page.getCropBox().getWidth());
int pageHeight = Math.round(page.getCropBox().getHeight());
float imgRatio = 1;
if ( pageWidth < img.getWidth(null)) {
imgRatio = (float)img.getWidth(null) / (float)pageWidth;
}
int imgWidth = Math.round(img.getWidth(null) / imgRatio);
int imgHeight = Math.round(img.getHeight(null) / imgRatio);
int pageWidthPosition = (pageWidth - imgWidth) / 2;
int pageHeightPosition = (pageWidth - imgWidth) / 2;
PDPageContentStream contents = new PDPageContentStream(doc, page);
contents.drawImage(pdImage, pageWidthPosition, pageHeightPosition, imgWidth, imgHeight);
contents.close();
doc.save("/usr/local/tomcat/file/sht/pdf/" + uuid + ".pdf");
} catch (Exception e) {
System.out.println("Exception! : " + e.getMessage());
}
try {
doc.close();
} catch (IOException e) {
e.printStackTrace();
}
return "/usr/local/tomcat/file/sht/pdf/" + uuid + ".pdf";
}
}